improve libusb (#1641)

* improve libusb

* Update xmake.lua

packages/l/libusb/xmake.lua

@@ -25,7 +25,7 @@ package("libusb")
 
     if is_plat("macosx") then
         add_frameworks("CoreFoundation", "IOKit")
-    elseif is_plat("linux") then
+    elseif is_plat("linux", "bsd") then
         add_syslinks("pthread")
     end
 
@@ -84,13 +84,10 @@ package("libusb")
         end
     end)
 
-    on_install("macosx", "linux", function (package)
+    on_install("macosx", "linux", "bsd", function (package)
         local configs = {}
         table.insert(configs, "--enable-shared=" .. (package:config("shared") and "yes" or "no"))
         table.insert(configs, "--enable-static=" .. (package:config("shared") and "no" or "yes"))
-        if package:config("pic") ~= false then
-            table.insert(configs, "--with-pic")
-        end
         local cflags, ldflags
         if package:is_plat("linux") then
             cflags = "-I" .. package:dep("eudev"):installdir("include")